diff options
| author | Aamir Bohra <aamir.bohra@intel.com> | 2021-03-05 09:41:20 +0530 |
|---|---|---|
| committer | Tim Wawrzynczak <twawrzynczak@chromium.org> | 2021-03-11 15:53:58 +0000 |
| commit | 7e0019ef209b6c552f03023255b9c75418fdb88a (patch) | |
| tree | 37b1096149d2cd54dff0bd455d7e0ff574800383 | |
| parent | a5cdf75f690c2fb48d00df6ab4e7ba2bfd8a4480 (diff) | |
src/cpu/x86: Add helper mp_run_on_all_aps
Add a helper function mp_run_on_all_aps, it allows running a given
func on all APs excluding the BSP, with an added provision to run
func in serial manner per AP.
BUG=b:169114674
Signed-off-by: Aamir Bohra <aamir.bohra@intel.com>
Change-Id: I74ee8168eb6380e346590f2575350e0a6b73856e
Reviewed-on: https://review.coreboot.org/c/coreboot/+/51271
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
| -rw-r--r-- | src/cpu/x86/mp_init.c | 22 | ||||
| -rw-r--r-- | src/include/cpu/x86/mp.h | 6 |
2 files changed, 28 insertions, 0 deletions
diff --git a/src/cpu/x86/mp_init.c b/src/cpu/x86/mp_init.c index cca6093458..3edb5e7693 100644 --- a/src/cpu/x86/mp_init.c +++ b/src/cpu/x86/mp_init.c @@ -992,6 +992,28 @@ int mp_run_on_aps(void (*func)(void *), void *arg, int logical_cpu_num, return run_ap_work(&lcb, expire_us); } +int mp_run_on_all_aps(void (*func)(void *), void *arg, long expire_us, bool run_parallel) +{ + int ap_index, bsp_index; + + if (run_parallel) + return mp_run_on_aps(func, arg, 0, expire_us); + + bsp_index = cpu_index(); + + const int total_threads = global_num_aps + 1; /* +1 for BSP */ + + for (ap_index = 0; ap_index < total_threads; ap_index++) { + /* skip if BSP */ + if (ap_index == bsp_index) + continue; + if (mp_run_on_aps(func, arg, ap_index, expire_us)) + return CB_ERR; + } + + return CB_SUCCESS; +} + int mp_run_on_all_cpus(void (*func)(void *), void *arg) { /* Run on BSP first. */ diff --git a/src/include/cpu/x86/mp.h b/src/include/cpu/x86/mp.h index b2704eb5b0..bc44415fdb 100644 --- a/src/include/cpu/x86/mp.h +++ b/src/include/cpu/x86/mp.h @@ -125,6 +125,12 @@ enum { int mp_run_on_aps(void (*func)(void *), void *arg, int logical_cpu_num, long expire_us); +/* + * Runs func on all APs excluding BSP, with a provision to run calls in parallel + * or serially per AP. + */ +int mp_run_on_all_aps(void (*func)(void *), void *arg, long expire_us, bool run_parallel); + /* Like mp_run_on_aps() but also runs func on BSP. */ int mp_run_on_all_cpus(void (*func)(void *), void *arg); |